Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The USB interface of the WebUSB API provides attributes and methods for finding and connecting USB devices from a web page.

Use navigator.usb to get access to the USB object.

The USB interface inherits from EventTarget.

EventTarget USB

Instance properties


Instance methods

USB.getDevices() Experimental

Returns a Promise that resolves with an array of USBDevice objects for paired attached devices.

USB.requestDevice() Experimental

Returns a Promise that resolves with an instance of USBDevice if the specified device is found. Calling this function triggers the user agent's pairing flow.


connect Experimental

Fired whenever a previously paired device is connected.

disconnect Experimental

Fired whenever a paired device is disconnected.


# usb

Browser compatibility

BCD tables only load in the browser